Follow the people · Insider
Donald Michael Westermann
Donald Michael Westermann files insider transactions with the SEC as a chief information officer of Eastern Bankshares (EBC). We hold 2 disclosed purchases and sales filed since 16 October 2020, 1 of them in the last 90 days.
- Files forEBC
- Disclosed buys and sells2 in all, 1 in the last 90 days
- Last disclosure2 September 2026
Positions held
1 post we hold — a term names its own dates; a run of filings only says when they filed- Filed 14 October 2020 — 1 September 2026Chief Information Officer · Eastern Bankshares (EBC)45 Form 4 lines · source: SEC Form 4
Everything they disclosed
45 entries, newest first — one per disclosure report, one per Form 4 line- ▼ sold on the open market 10,407 shares of Eastern BanksharesSEC Form 42 September 2026Common Stock · traded 1 September 2026 · filed 2 September 2026
- ▼ sold on the open market 23,005 shares of Eastern BanksharesSEC Form 42 September 2026Common Stock · traded 1 September 2026 · filed 2 September 2026
- exercised options over 2,165 shares of Eastern BanksharesSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- had shares withheld for tax on 961 shares of Eastern BanksharesSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- exercised options over 2,165 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2026Restricted Stock Units · traded 3 March 2026 · filed 5 March 2026
- exercised options over 2,165 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2026Restricted Stock Units · traded 3 March 2026 · filed 5 March 2026
- exercised options over 2,165 shares of Eastern BanksharesSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- had shares withheld for tax on 961 shares of Eastern BanksharesSEC Form 45 March 2026Common Stock · traded 3 March 2026 · filed 5 March 2026
- exercised options over 14,359 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- had shares withheld for tax on 6,522 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- was granted 5,520 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- exercised options over 9,488 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 1 March 2026 · filed 3 March 2026
- exercised options over 1,977 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 1 March 2026 · filed 3 March 2026
- exercised options over 2,894 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 1 March 2026 · filed 3 March 2026
- was granted 7,099 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 2 March 2026 · filed 3 March 2026
- had shares withheld for tax on 2,449 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- exercised options over 9,488 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 1 March 2026 · filed 3 March 2026
- exercised options over 1,977 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 1 March 2026 · filed 3 March 2026
- exercised options over 2,894 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 1 March 2026 · filed 3 March 2026
- was granted 7,099 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2026Restricted Stock Units · traded 2 March 2026 · filed 3 March 2026
- exercised options over 14,359 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- had shares withheld for tax on 6,522 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- was granted 5,520 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- had shares withheld for tax on 2,449 shares of Eastern BanksharesSEC Form 43 March 2026Common Stock · traded 1 March 2026 · filed 3 March 2026
- ▼ sold on the open market 21,256 shares of Eastern BanksharesSEC Form 429 January 2026Common Stock · traded 28 January 2026 · filed 29 January 2026
- ▼ sold on the open market 21,256 shares of Eastern BanksharesSEC Form 429 January 2026Common Stock · traded 28 January 2026 · filed 29 January 2026
- exercised options over 9,488 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2025Restricted Stock Units · traded 3 March 2025 · filed 5 March 2025
- exercised options over 1,977 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2025Restricted Stock Units · traded 3 March 2025 · filed 5 March 2025
- exercised options over 2,894 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2025Restricted Stock Units · traded 3 March 2025 · filed 5 March 2025
- was granted 34,697 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2025Restricted Stock Units · traded 3 March 2025 · filed 5 March 2025
- exercised options over 14,359 shares of Eastern BanksharesSEC Form 45 March 2025Common Stock · traded 3 March 2025 · filed 5 March 2025
- had shares withheld for tax on 6,369 shares of Eastern BanksharesSEC Form 45 March 2025Common Stock · traded 3 March 2025 · filed 5 March 2025
- was granted 35,578 shares of Eastern BanksharesSEC Form 45 March 2025Common Stock · traded 3 March 2025 · filed 5 March 2025
- had shares withheld for tax on 15,932 shares of Eastern BanksharesSEC Form 45 March 2025Common Stock · traded 3 March 2025 · filed 5 March 2025
- exercised options over 9,487 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2024Restricted Stock Units · traded 1 March 2024 · filed 5 March 2024
- exercised options over 1,976 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2024Restricted Stock Units · traded 1 March 2024 · filed 5 March 2024
- was granted 8,683 shares of Eastern Bankshares (a derivative holding)SEC Form 45 March 2024Restricted Stock Units · traded 1 March 2024 · filed 5 March 2024
- exercised options over 11,463 shares of Eastern BanksharesSEC Form 45 March 2024Common Stock · traded 1 March 2024 · filed 5 March 2024
- had shares withheld for tax on 3,557 shares of Eastern BanksharesSEC Form 45 March 2024Common Stock · traded 1 March 2024 · filed 5 March 2024
- exercised options over 9,487 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2023Restricted Stock Units · traded 1 March 2023 · filed 3 March 2023
- was granted 5,930 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2023Restricted Stock Units · traded 1 March 2023 · filed 3 March 2023
- exercised options over 9,487 shares of Eastern BanksharesSEC Form 43 March 2023Common Stock · traded 1 March 2023 · filed 3 March 2023
- had shares withheld for tax on 2,913 shares of Eastern BanksharesSEC Form 43 March 2023Common Stock · traded 1 March 2023 · filed 3 March 2023
- was granted 47,438 shares of Eastern Bankshares (a derivative holding)SEC Form 43 March 2022Restricted Stock Units · traded 1 March 2022 · filed 3 March 2022
- ▲ bought on the open market 20,000 shares of Eastern BanksharesSEC Form 416 October 2020Common Stock · traded 14 October 2020 · filed 16 October 2020
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.